When the news came to Joab, he fled to the Tent of Adonai and grasped the horns of the altar—for Joab had defected to Adonijah, though he had not defected to Absalom.
So it was reported to Solomon: “Behold, Adonijah is afraid of King Solomon, for look, he grasped the horns of the altar, saying, ‘Let King Solomon swear to me first that he will not put his servant to death with the sword.’”